喔

wō
  1. (onom.) cry of a rooster (usu. reduplicated)
  2. Taiwan pr. wò

CEDICT

onomatopoeic

Homographs

喔 ō (interjection) oh; I see (used to indicate realization, understanding)
喔 o (Tw) (sentence-final particle) (used to convey a friendly tone when giving an admonition or correcting sb etc)